Block and fluid control device

Abstract

A block and a fluid control device includes a first mounting cavity. A wall portion of a first fluid passage is provided with a first valve. A first mounting-cavity bottom wall includes a first sub-bottom wall, and the height of the first sub-bottom wall increases as the first sub-bottom wall extends from a first end of the first sub-bottom wall toward a second end of the first sub-bottom wall. The pressure drop across the block and the fluid control device is low.

The invention claimed is: 
     
       1. A fluid control device, comprising a first core portion, a block, an inlet and a first outlet, and the block comprising a first mounting cavity and a first fluid passage, wherein an end of the first fluid passage is the inlet, the first fluid passage is in communication with the first mounting cavity, and the inlet is in communication with the first mounting cavity;
 the block comprises a passage wall portion forming the first fluid passage, and a periphery side portion of the passage wall portion is at least provided with a first valve port, and the first fluid passage is in communication with the first mounting cavity by the first valve port; 
 the block at least comprises a first-mounting-cavity bottom wall, and the first-mounting-cavity bottom wall at least comprises a first sub-bottom wall; one end of the first sub-bottom wall is relatively closer to the first valve port than another end of the first sub-bottom wall, and is defined as a first end of the first sub-bottom wall, and the another end of the first sub-bottom wall is relatively farther away from the first valve port than the first end of the first sub-bottom wall, and is defined as a second end of the first sub-bottom wall; and with an axial direction of the first mounting cavity being taken as a height direction, the first sub-bottom wall is extended from the first end of the first sub-bottom wall toward the second end of the first sub-bottom wall in such a manner that the height of the sub-bottom wall is progressively increased; 
 the first core portion is at least partially located in the first mounting cavity, the first core portion is in sealing arrangement with the first mounting cavity inner wall, and the first core portion comprises a first cooperating wall; 
 the block comprises the first top wall, the first top wall is located in the first mounting cavity, and at least part of a first cooperating wall is in cooperation with the first top wall; and 
 a clearance is reserved between the first cooperating wall and the first top wall, and the first mounting cavity is in communication with the first outlet or the first cooperating wall is in sealing arrangement with the first top wall, and the first mounting cavity is not in communication with the first outlet. 
 
     
     
       2. The fluid control device according to  claim 1 , wherein the first-mounting-cavity bottom wall at least comprises a first platform portion, the first platform portion is connected to the second end of the first sub-bottom wall, and a height of the first platform portion is higher than the height of the first sub-bottom wall; and
 the first mounting cavity comprises a first centerline perpendicular to the first fluid passage and dividing the first mounting cavity into a first mounting sub-cavity and a second mounting sub-cavity, the first mounting sub-cavity is relatively closer to the inlet than the second mounting sub-cavity, the second mounting sub-cavity is relatively farther away from the inlet than the first mounting sub-cavity, most of the first sub-bottom wall is part of a wall portion forming the second mounting sub-cavity, and most of the first platform portion is part of a wall portion forming the first mounting sub-cavity. 
 
     
     
       3. The fluid control device according to  claim 2 , wherein the first-mounting-cavity bottom wall at least comprises a second sub-bottom wall, a height of the second sub-bottom wall is lower than the height of the first sub-bottom wall, and the first sub-bottom wall is connected with the first platform portion by the second sub-bottom wall; an end portion, connected with the second end of the first sub-bottom wall, of the first platform portion, is defined as a first end of the first platform portion, and another end of the first platform portion is defined as a second end of the first platform portion
 the block comprises a first side wall extending downward from the first end of the first sub-bottom wall and a second side wall extending downward from a second end of the first platform portion, with a direction toward an opening of the first mounting cavity being defined as an upward direction, and a direction toward the first-mounting-cavity bottom wall being defined as a downward direction; and 
 the first mounting cavity comprises a first groove hole, the first side wall, the second side wall and the second sub-bottom wall are part of a wall portion forming the first groove hole, and the first valve port is arranged on part of a wall portion of a first mounting cavity inner wall forming the first groove hole. 
 
     
     
       4. The fluid control device according to  claim 1 , wherein
 the block comprises a second mounting cavity, the first fluid passage is in communication with the second mounting cavity, another end of the first fluid passage is a second valve port, and the second valve port is configured to communicate the second mounting cavity with the first fluid passage; and 
 the block at least comprises a second-mounting-cavity bottom wall, and the second-mounting-cavity bottom wall at least comprises a third sub-bottom wall; one end of the third sub-bottom wall is relatively closer to the second valve than another end of the third sub-bottom wall, and is defined as a first end of the third sub-bottom wall, and the another end of the third sub-bottom wall is relatively farther away from the second valve port than the first end of the third sub-bottom wall, and is defined as a second end of the third sub-bottom wall; and with an axial direction of the second mounting cavity being taken as the height direction, the third sub-bottom wall is extended from a first end of the third sub-bottom wall toward a second end of the third sub-bottom wall in such a manner that the height of the sub-bottom wall is progressively increased. 
 
     
     
       5. The fluid control device according to  claim 4 , wherein the second-mounting-cavity bottom wall at least comprises a second platform portion, the second platform portion is connected to the second end of the third sub-bottom wall, and with the axial direction of the second mounting cavity being taken as the height direction, a height of the second platform portion is higher than the height of the third sub-bottom wall. 
     
     
       6. The fluid control device according to  claim 4 , wherein the second-mounting-cavity bottom wall at least comprises a fourth sub-bottom wall, one end of the fourth sub-bottom wall is relatively closer to the second valve port than another end of the fourth sub-bottom wall, and is defined as a first end of the fourth sub-bottom wall, and the another end of the fourth sub-bottom wall is relatively farther away from the second valve port than the first end of the fourth sub-bottom wall, and is defined as a second end of the fourth sub-bottom wall; and with the axial direction of the second mounting cavity being taken as the height direction, the fourth sub-bottom wall is extended extends from the first end of the fourth sub-bottom wall toward the second end of the fourth sub-bottom wall in such a manner that the height of the sub-bottom wall is progressively increased. 
     
     
       7. The fluid control device according to  claim 6 , wherein the second mounting cavity comprises a second centerline parallel to the first fluid passage and dividing the second mounting cavity into a third mounting sub-cavity and a fourth mounting sub-cavity, the third mounting sub-cavity and the fourth mounting sub-cavity are located on two side of an extending direction of the first fluid passage, most of the third sub-bottom wall is located in the third mounting sub-cavity, and most of the fourth sub-bottom wall is located in the fourth mounting sub-cavity. 
     
     
       8. The fluid control device according to  claim 1 , wherein the block comprises a second mounting cavity, the first fluid passage is in communication with the second mounting cavity, a periphery side portion of the passage wall portion is provided with a second valve port, and the second valve port is configured to communicate the second mounting cavity with the first fluid passage; and
 the second-mounting-cavity bottom wall at least comprises a third sub-bottom wall, one end of the third sub-bottom wall is relatively closer to the second valve port than another end of the third sub-bottom wall, and is defined as a first end of the third sub-bottom wall, and the another end of the third sub-bottom wall is relatively farther away from the second valve port than the first end of the third sub-bottom wall, and is defined as a second end of the third sub-bottom wall; and the third sub-bottom wall is extended from the first end of the third sub-bottom wall toward the second end of the third sub-bottom wall in such a manner that the height of the sub-bottom wall is progressively increased. 
 
     
     
       9. The fluid control device according to  claim 8 , wherein the second-mounting-cavity bottom wall at least comprises a second platform portion, the second platform portion is connected to the second end of the third sub-bottom wall, and the second-mounting-cavity bottom wall at least comprises a fifth sub-bottom wall; and with the axial direction of the second mounting cavity being taken as the height direction, a height of the fifth sub-bottom wall is lower than the height of the third sub-bottom wall, and the fifth sub-bottom wall is configured to connect the third sub-bottom wall with the second platform portion. 
     
     
       10. The fluid control device according to  claim 9 , wherein the block comprises a third side wall extending downward from the first end of the third sub-bottom wall and a fourth side wall extending downward from the second end of the second platform portion, with a direction toward an opening of the second mounting cavity being defined as an upward direction, and a direction toward the second-mounting-cavity bottom wall being defined as a downward direction; and
 the second mounting cavity comprises a second groove hole, the third side wall, the fourth side wall and the fifth sub-bottom wall are part of a wall portion forming the second groove hole, and the second valve port is arranged on part of a wall portion of a second mounting cavity inner wall forming the second groove hole. 
 
     
     
       11. The fluid control device according to  claim 4 , wherein the block comprises a first outlet, the first mounting cavity inner wall and a first annular portion, the first mounting cavity inner wall is part of a wall portion forming the first mounting cavity, and the first annular portion is located in a middle of the first mounting cavity; the first-mounting-cavity bottom wall is extended radially from a circumferential outer edge of the first annular portion to the first mounting cavity inner wall; the first annular portion comprise a first through hole, the first through hole is in communication with the first mounting cavity, and the first through hole is in communication with the first outlet; the first annular portion comprises a first top wall, a first annular inner wall and a first annular outer wall, the first annular inner wall is part of a wall portion forming the first through hole, the first top wall and the first annular outer wall are part of the wall portion forming the first mounting cavity, and an inner diameter of the first annular outer wall is smaller than an inner diameter of the first mounting cavity; with the axial direction of the first mounting cavity being taken as the height direction, a height of the first annular outer wall is lower than a height of the first mounting cavity inner wall, and a height of the first-mounting-cavity bottom wall is lower than a height of the first top wall; and the first-mounting-cavity bottom wall at least comprises the first platform portion, and the height of the first platform portion is lower than the height of the first top wall;
 the block further comprises a second outlet, the second mounting cavity inner wall and a second annular portion, the second mounting cavity inner wall is part of a wall portion forming the second mounting cavity, and the second annular portion is located in a middle of the second mounting cavity; and 
 the second annular portion comprise a second through hole, the second through hole is in communication with the second mounting cavity, and the second through hole is in communication with the second outlet; the second annular portion comprises a second top wall, a second annular inner wall and a second annular outer wall, the second annular inner wall is part of a wall portion forming the second through hole, the second top wall and the second annular outer wall are part of the wall portion forming the second mounting cavity, and an inner diameter of the second annular outer wall is smaller than an inner diameter of the second mounting cavity inner wall; and with the axial direction of the second mounting cavity being taken as the height direction, a height of the second annular outer wall is lower than a height of the second mounting cavity inner wall, a height of the second-mounting-cavity bottom wall is lower than a height of the second top wall, and the height of the second mounting cavity inner wall is higher than a height of the second top wall. 
 
     
     
       12. The fluid control device according to  claim 8 , wherein the fluid control device further comprises a second core portion and a third core portion,
 the block comprises the second mounting cavity, the second mounting cavity inner wall, a third mounting cavity and a third mounting cavity inner wall, at least part of the second core portion is located in the second mounting cavity, the second core portion is in sealing arrangement with the second mounting cavity inner wall, the second core portion comprises a second cooperating wall, at least part of the third core portion is located in the third mounting cavity, the third core portion is in sealing arrangement with the third mounting cavity inner wall, and the third core portion comprises a third cooperating wall; and 
 the fluid control device comprises a second outlet and a third outlet, the inlet is in communication with the second mounting cavity, the inlet is in communication with the third mounting cavity or the second outlet is in communication with the third mounting cavity, the block comprise the second top wall and a third top wall, the second top wall is located in the second mounting cavity, the third top wall is located in the third mounting cavity, and at least part of the second cooperating wall is in cooperation with the second top wall; 
 a clearance is reserved between the second cooperating wall and the second top wall, and the second mounting cavity is in communication with the second outlet; or the second cooperating wall is in sealing arrangement with the second top wall, and the second mounting cavity is not in communication with the second outlet; and 
 at least part of the third cooperating wall is in cooperation with the third top wall, 
 a clearance is reserved between the third cooperating wall and the third top wall, and the third mounting cavity is in communication with the third outlet; or the third cooperating wall is in sealing arrangement with the third top wall, and the third mounting cavity is not in communication with the third outlet. 
 
     
     
       13. The fluid control device according to  claim 12 , wherein the block comprises a second fluid passage, and the second fluid passage is configured to communicate the second outlet with the third mounting cavity; and
 the block comprises a plug, the plug seals an end of the second fluid passage; or the block comprises a first portion and a second portion, the first portion is in sealing arrangement with the second portion, the first portion is provided with the first mounting cavity and the second mounting cavity, the second portion is provided with the third mounting cavity, the second fluid passage is arranged in the second portion, one end of the second fluid passage is an open end, and the second outlet is in communication with the open end. 
 
     
     
       14. The fluid control device according to  claim 12 , wherein the fluid control device comprises a sensor, the block comprises a mounting hole, at least part of the sensor is located in the mounting hole, and the mounting hole is in communication with the first fluid passage. 
     
     
       15. The fluid control device according to  claim 5 , wherein the second-mounting-cavity bottom wall at least comprises a fourth sub-bottom wall, one end of the fourth sub-bottom wall is relatively closer to the second valve port than another end of the fourth sub-bottom wall, and is defined as a first end of the fourth sub-bottom wall, and the another end of the fourth sub-bottom wall is relatively farther away from the second valve port than the first end of the fourth sub-bottom wall, and is defined as a second end of the fourth sub-bottom wall; and with the axial direction of the second mounting cavity being taken as the height direction, the fourth sub-bottom wall is extended extends from the first end of the fourth sub-bottom wall toward the second end of the fourth sub-bottom wall in such a manner that the height of the sub-bottom wall is progressively increased. 
     
     
       16. The fluid control device according to  claim 13 , wherein the fluid control device comprises a sensor, the block comprises a mounting hole, at least part of the sensor is located in the mounting hole, and the mounting hole is in communication with the first fluid passage. 
     
     
       17. A block, comprising a first mounting cavity and a first fluid passage, wherein an end of the first fluid passage is an inlet, the first fluid passage is in communication with the first mounting cavity, and the inlet is in communication with the first mounting cavity;
 the block comprises a passage wall portion forming the first fluid passage, and a periphery side portion of the passage wall portion is at least provided with a first valve port, and the first fluid passage is in communication with the first mounting cavity by the first valve port; and 
 the block at least comprises a first-mounting-cavity bottom wall, and the first-mounting-cavity bottom wall at least comprises a first sub-bottom wall; one end of the first sub-bottom wall is relatively closer to the first valve port than another end of the first sub-bottom wall, and is defined as a first end of the first sub-bottom wall, and the another end of the first sub-bottom wall is relatively farther away from the first valve port than the first end of the first sub-bottom wall, and is defined as a second end of the first sub-bottom wall; and with an axial direction of the first mounting cavity being taken as a height direction, the first sub-bottom wall is extended from the first end of the first sub-bottom wall toward the second end of the first sub-bottom wall in such a manner that the height of the sub-bottom wall is progressively increased.